Miller Bobcat 200 Air Pak Gas Welder Generator, Air Compressor, 30 CFM, 210A
The Miller Bobcat 200 Air Pak is a gas welder generator with a built-in rotary-screw air compressor, pairing a 210 A inverter-based welder for stick, DC TIG, flux-cored and MIG work with 30 cfm of compressed air and 6,500 W of continuous auxiliary power. Its 23 hp Kohler gasoline engine also runs 12/24 V battery charge and crank assist.
This engine-driven welder spans 30-210 A for stick (SMAW), DC TIG (GTAW), flux-cored (FCAW) and MIG (GMAW), with aluminum welding among its applications and farm and ranch, construction and fabrication among its industries. Single-phase auxiliary power is 6,500 W continuous and 8,000 W peak, and Auto-Speed technology adjusts engine speed by itself as weld and battery-charge loads change, between 2400 RPM idle and 2400 or 3600 RPM weld speed.
The Rotorcomp rotary-screw compressor supplies 20 cfm at idle and 30 cfm (0.85 m3/min) at full speed, with 80-175 psig working pressure, a 100% duty cycle and high-pressure shutdown at 200 psi. Battery charge reaches 100 A and crank assist 300 A at 12/24 V, the tank holds 7 gal., and Miller states that running this unit instead of the truck engine can cut truck idle time by up to 75 percent.
Highlights
210 A inverter-based welder; 30-210 A amperage range
Stick, DC TIG, flux-cored and MIG processes
Rotary-screw compressor: 20 cfm at idle, 30 cfm at full speed, 80-175 psig
6,500 W continuous and 8,000 W peak single-phase auxiliary power
Battery charge up to 100 A and crank assist up to 300 A at 12/24 V
23 hp Kohler gasoline engine with Auto-Speed technology
Specifications
Brand | Miller |
Manufacturer part number | 907771 |
Processes | Stick (SMAW), TIG DC (GTAW-DC), flux-cored (FCAW), MIG (GMAW) |
Amperage range | 30-210 A |
Auxiliary power | 6,500 W continuous; 8,000 W peak (single-phase) |
Engine | Kohler, 23 hp, gasoline |
Engine speed | 2400 RPM idle; 2400 or 3600 RPM weld |
Fuel capacity | 7 gal. |
Sound rating | Idle: 66 dB / High speed with load: 73 |
Compressor | Rotorcomp rotary-screw, 30 cfm (0.85 m3/min), 100% duty cycle |
Compressor pressure | 80-175 psig; shutdown at high pressure (200 psi) |
Battery charge | 12/24 V, 100 A |
Crank assist | 12/24 V, 300 A |
Good to know
Engine-driven equipment gives off carbon monoxide: run it outdoors only, away from doors, windows and vents.




